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IJ11402: THE CIFS DRIVER MAY HANG IN MB_PUT_UIO APPLIES TO AIX 7100-05

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Processes using CIFS mounts may hang in an
infinite loop if a write operation fails,
constantly using CPU.  Processes hung in this
state will have a stack like the following.

mb_put_uio@AF50_21+000058
smb_write+00048C
smbfs_writevnode+0000A8
cn_rdwr+000258
.hkey_legacy_gate+00004C
vnop_rdwr+0001A4
vno_rw@AF17_5+000158
IPRA.$rwuio+0000D4
IPRA.$rdwr+00018C
kewrite+0001A4
syscall+000228

Local fix

  • 



Problem summary


    

  • ****************************************************************
* USERS AFFECTED:
* Systems running the 7100-05 Technology Level with
* any of the following filesets at or between the given levels:
* MIN          MAX          FILESET
* 7.1.5.0      7.1.5.30     bos.cifs_fs.rte
****************************************************************
* PROBLEM DESCRIPTION:
* Processes using CIFS mounts may hang in an
* infinite loop if a write operation fails,
* constantly using CPU.  Processes hung in this
* state will have a stack like the following.
* mb_put_uio@AF50_21+000058
* smb_write+00048C
* smbfs_writevnode+0000A8
* cn_rdwr+000258
* .hkey_legacy_gate+00004C
* vnop_rdwr+0001A4
* vno_rw@AF17_5+000158
* IPRA.$rwuio+0000D4
* IPRA.$rdwr+00018C
* kewrite+0001A4
* syscall+000228
****************************************************************
* RECOMMENDATION:
* Install APAR IJ11402.
****************************************************************

    



Problem conclusion


    

  • Restore uio structure fields when necessary.

    



Temporary fix


    

  • 



Comments


    

  • 7100-04 - use AIX APAR IJ13309
7100-05 - use AIX APAR IJ11402
7100-05 - use AIX APAR IJ11402
7200-01 - use AIX APAR IJ13810
7200-02 - use AIX APAR IJ10660
7200-03 - use AIX APAR IJ12374

    



APAR Information




    

  • APAR number
    IJ11402
    • 

  • Reported component name
    AIX V7.1
    • 

  • Reported component ID
    5765H4000
    • 

  • Reported release
    710
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    YesPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2018-11-17
    • 

  • Closed date
    2018-12-04
    • 

  • Last modified date
    2019-11-14
    • 





    

  • APAR is sysrouted FROM one or more of the following:
    

    
IJ10660
    

    • 

  • APAR is sysrouted TO one or more of the following:
    

    • 



Fix information


    

  • Fixed component name
    AIX V7.1
    • 

  • Fixed component ID
    5765H4000
    • 



Applicable component levels


    

  • R710  PSY  U883013
       UP19/05/01  I  1000
    • 








      
              
                            

              

              [{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SG11R"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]
              

                                                                    

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            19 April 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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